Significant anaerobic production of fluorescent dissolved organic matter in the deep East Sea (Sea of Japan)

被引：35

作者：

Kim, Jeonghyun ^{[1
]}

Kim, Guebuem ^{[1
]}

机构：

[1] Seoul Natl Univ, Res Inst Oceanog, Sch Earth & Environm Sci, Seoul, South Korea

来源：

GEOPHYSICAL RESEARCH LETTERS | 2016年 / 43卷 / 14期

基金：

新加坡国家研究基金会;

关键词：

fluorescent dissolved organic matter; colored dissolved organic matter; humic like; PARAFAC; East Sea; FDOM production; ULLEUNG BASIN; SULFATE REDUCTION; MARINE-SEDIMENTS; COASTAL WATERS; BOTTOM WATER; OCEAN; CARBON; PACIFIC; DISTRIBUTIONS; ACCUMULATION;

D O I：

10.1002/2016GL069335

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The distribution of fluorescent dissolved organic matter (FDOM) in the East Sea (Sea of Japan) was examined by excitation-emission matrix spectroscopy with parallel factor analysis (PARAFAC). Humic-like FDOM (FDOMH) increased with depth and was significantly correlated with Apparent Oxygen Utilization (AOU), indicating that FDOMH in the deep water is mainly produced by oxidation of organic matter. In addition, a surprisingly large excess of FDOMH relative to that expected from the observed AOU was found from 1000m to the bottom (up to 3500m). Based on the high-resolution geographical distribution and characteristics of FDOM in the East Sea, we conclude that this excess likely originates from anaerobic FDOMH production in subsurface bottom sediments. This FDOMH flux accounts for 8-15% of the total FDOM production in the water column. Our results suggest that anaerobic activities in subsurface sediments are an important hidden source of FDOM in the ocean.

引用

页码：7609 / 7616

页数：8

共 47 条

[1]

[Anonymous], 1991, J KOREAN SOC OCEANOG

[2] Spatial and temporal variability of absorption by dissolved material at a continental shelf [J].

Boss, E ;

Pegau, WS ;

Zaneveld, JRV ;

Barnard, AH .

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2001, 106 (C5) :9499-9507

[3]

Burdige DJ, 2015, BIOGEOCHEMISTRY OF MARINE DISSOLVED ORGANIC MATTER, 2ND EDITION, P535, DOI 10.1016/B978-0-12-405940-5.00012-1

[4] Fluorescent dissolved organic matter in marine sediment pore waters [J].

Burdige, DJ ;

Kline, SW ;

Chen, WH .

MARINE CHEMISTRY, 2004, 89 (1-4) :289-311

[5] Water mass age and aging driving chromophoric dissolved organic matter in the dark global ocean [J].

Catala, T. S. ;

Reche, I. ;

Alvarez, M. ;

Khatiwala, S. ;

Guallart, E. F. ;

Benitez-Barrios, V. M. ;

Fuentes-Lema, A. ;

Romera-Castillo, C. ;

Nieto-Cid, M. ;

Pelejero, C. ;

Fraile-Nuez, E. ;

Ortega-Retuerta, E. ;

Marrase, C. ;

Alvarez-Salgado, X. A. .

GLOBAL BIOGEOCHEMICAL CYCLES, 2015, 29 (07) :917-934

[6] Mean flow and variability in the southwestern East Sea [J].

Chang, KI ;

Hogg, NG ;

Suk, MS ;

Byun, SK ;

Kim, YG ;

Kim, K .

DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS, 2002, 49 (12) :2261-2279

[7] THE RELATIONSHIP BETWEEN DISSOLVED ORGANIC-CARBON (DOC) AND FLUORESCENCE IN ANOXIC MARINE POREWATERS - IMPLICATIONS FOR ESTIMATING BENTHIC DOC FLUXES [J].

CHEN, RF ;

BADA, JL ;

SUZUKI, Y .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1993, 57 (09) :2149-2153

[8] THE FLUORESCENCE OF DISSOLVED ORGANIC-MATTER IN POREWATERS OF MARINE-SEDIMENTS [J].

CHEN, RF ;

BADA, JL .

MARINE CHEMISTRY, 1994, 45 (1-2) :31-42

[9] Marine optical biogeochemistry: The chemistry of ocean color [J].

Coble, Paula G. .

CHEMICAL REVIEWS, 2007, 107 (02) :402-418

[10] Distribution and optical properties of CDOM in the Arabian Sea during the 1995 Southwest Monsoon [J].

Coble, PG ;

Del Castillo, CE ;

Avril, B .

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY, 1998, 45 (10-11) :2195-2223

← 1 2 3 4 5 →